[quote=cropped.head;#300570;1350007474]A spy? why do they need rin if thats the case? [/quote]
Because she's a ninja of Konoha plus she's around with Minato and other Konoha ninjas.. It's a good plan for them if they have spy inside Konoha.. sth like that. As we can see from the latest chapter, the Hidden Mist ninjas want to retrieve Rin's body and they don't want to let the enemies to get Rin's body and get intel from her. Or.. Rin was blackmailed by Hidden Mist ninjas.
Btw, sth bothers me about what Zetsu mentioned from the previous chapter, about the Hidden Mist's experimental bodies. Was Rin an experimental body?? Or it was just Madara's plan to make Obito convinced to join on his side? Dafuq so many speculations.